US2539632A

US2539632A - Tractor mounted disk cultivator

Info

Publication number: US2539632A
Application number: US596521A
Authority: US
Inventors: Samuel J Miller
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-05-29
Filing date: 1945-05-29
Publication date: 1951-01-30
Anticipated expiration: 1968-01-30

Description

S. J. MILLER TRACTOR MOUNTED DISK CULTIVATOR Jan. 30, 1951 Filed May 29, 1945 '5 Sheets-Sheet 1 Jan. 30, 1951 5. J. MILLER 2,539,632

TRACTOR MOUNTED DISK CULTIVATOR Filed May 29, 1945 3 Sheets-Sheet 2 Jan. 30, 1951 5. J. MILLER TRACTOR MOUNTED DISK CULTIVATOR 5 Sheets-Sheet 3 Filed May 29, 1945 fiatenteci jan. 1 9 51 UNITED STATES PATENT OFFICE 2,539,632 TRACTOR ll/IOUNTED DISK CULTIVATOR Samuel .51. Miller, Corpus Christi, Tex;

Application May 29, 1945; Serial No. 596,521

7 Claims. 1 This invention relates to a tractor operated disc cultivator.

- An object of the invention is to provide an agricultural implement of the character described specially designed for pulverizing earth that has previously been plowed, either in preparation for planting, in some cases, or for cultivation puras a whole, by the numerals 9, ill, Ii and i2. The

poses.

Another object of the invention is to provide a harrow of the character described which has been particularly designed for pulverizing the earth that has been previously thrown up in beds,

or rows; or the harrow may be used for forming 2 selected elevation above the ground surface while the harrow is in operation.

As illustrated in Figure 2 there are a plurality of disc units, four being shown in the illustration, although a greater or less number may be used if desired. These disc units are pivotally mounted relative to the bar I. These units are designated,

end units 9 and I2 have the rearwardly diverging side bars I3, I4 and I5, l3, respectively, which are braced by the cross braces ll, I3 whose ends are secured to said respective side bars. Clamped to the bar I by the clamp I9 and the clamp bolts 23 are the plates 2|, 2| having the forwardly directed pairs of

arms

22, 22 and 23, 23 to which the forward ends of the side members of the frames 9 and I2 are pivoted on a horizontal axis;

1 It will be noted that these pivotal points are an ing each gang of discs whereby the same may be 'T Figure 2 is an enlarged, fragmentary, plan view.

' Figure 3 is a fragmentary, side elevation.

' Figure 4 is a top, plan view of an anchor employed; and

' Figure 5 is a fragmentary, side elevation of the harrow.

Referring now more particularly to the drawings wherein like numerals of reference designate the same parts in each of the figures, the numeral I designates a transverse bar to which the side members 2, 2 of an A-frame are connected by means of the

clamps

3, 3, which are clamped to said bar I. These

side members

3, 3 converge forwardly and are pivotally connected to the tractor hanger 4 so as to pivot on a transverse axis whereby the bar I may be moved up and down.

Mounted in suitable bearings on the tractor there is a transverse shaft 5 having the rearwardly extended

rigid arms

6, 6 connected thereto and depending from the free ends of these arms are the chains 1, I which are connected to the side members 2, 2. By suitably rotating the shaft 5 in one direction the side members 2, 2 of the frame may be elevated and when rotated in the other direction said frame may be lowered. The rotation of the shaft 5 is under the control of the operator by suitable mechanism mounted on the tractor.

Anchored to the ends of the bar I and extending forwardly therefrom are the

frames

8, 8, each frame 8 having ro-tatably mounted thereon a ground wheel as 8a which holds the bar I at a plate 35 and the vertical plate 36.

appreciable distance in front of the bar I and the corresponding frames 9 and I2 extend rearwardly underneath the bar I.

The intermediate plates 24 are clamped to the bar I by means of the clamp 25 and clamp bolts 26 and the lower ends of the plates 25 have the spaced, forwardly turned ears 2?, 2'! and 28, 28 to which the

corresponding side members

29, 30 of the frame It] and 3|, 32 of the frame II are pivoted on horizontal axis, These frames IE5 and II extend rearwardly underneath the bar I. The frames Ill and II are braced by the cross braces 33,- 33 whose ends are anchored to said respective side members.

Fastened to the rear ends of the respective side members of the frames are anchors such as 34 of a special type.

This anchor is shown in detail in Figure 4 and is of substantially angular shape having the top Secured to the rear ends of the side bars of the respective disc units are similar anchor plates, the plates of'the unit 9 being designated by the numerals 31, 31', the plates of the-unit I0 being designated by the numerals 38', 38, the plates of the unit I I being designated by the

numerals

39, 39, and the plates of the unit I2 being designated by the numerals 40, M3. The plates of the respective units extend inwardly toward each other, as

shown in Figure 2. The anchors 34 are fastened clamped to said anchor plate by a clamp bolt such' Each anchor plate has an arcuate slot 42 thereto and a clamp bolt as 43 is fitted through to the underside of the respective plates, The top plate 35 of each anchor is fitted closely against the underside of the corresponding anchor plate with-its head clamped against the corresponding anchor plate.

' Fastened'to the plate 360i each anchor 34 are the inverted U-shaped yokes 4 the free ends of whose side arms have the

bearings

45, 45 there on in which the axle 45 is mounted to rotate and fixed on these axles 46 are the concave-convex discs 47 having sharp cutting edges. Each plate 36 has the oblong

arcuate slots

48, 48; and clamp bolts 49 are fitted through the cross bar of each yoke and through the slots 48 and by means of which the yoke may be clamped to the plate 36.

Therefore two gangs of concavo-convex cutting discs depend from each of the units 9, I0, [1- and I2. By loosening the clamp bolt 43 the, corresponding gang of discs may be adjusted about a vertical axis and said clamp bolt then tightened to hold said gang at said point of adjustment. Also each gang of discs can be adjusted about a horizontal axis by loosening the clamp bolts 49 and making the adjustment and then, again ti hten n s id bolts.

It. will be noted from an inspection of Figure 1 that the concave sides of, the, discs, face forwards ly and it is to be further noted that the discs of h o e e of ach disc unit. face rwardly on ccnverging lines so that the discs of anyparticulav disc n w row the. oose i nwardly with respect to the line of travel of said unit so as to form he ea h in o. ri es or beds. or so as to follow the contour of said ridges, or beds, if previously formed.

The anchor plates 37, 3'1; 38, 38; 39, 39 ,and 40, 40 of the respective disc units are connected by the H-frames 50, 5|, 52 and 53v for strength, as h wn in Fi u e 21 Eastened to the

plates

21 and 24 and upstanding therefrom are the

standards

54, 54. There are the chains 55 whose forwardends, are vconnected to the upper ends of the standardsj i and whose rear ends are connected to the corresponding H -frarr.-

es

5t, 51, 52 and 53. These chains are of sufficient length so thatthey will be slack while the harrow discs are working incontact with the ground surface but when the transverse bar I is lifted, V by the manipulatien of the shaft 5,- as hereinabove explained, these chains 55 will eventually become taut and will lift the disc. units so that-th discs ll clear he roundsuria e when the end of a row has been reached, and it is.

desired to turn the harrow around or when it is des r d o an m he na row rom place. to place.

h i g nd e tiqnareillustrati m re y h l the b ac rinqi o the nvent n will be defined by the appnded claims.

What I claim is:

.1- In a ar o a ans se su por n r a, r m Whose forward nd s p qtall conne t d to, a ra and 0' .v h rea e d. f whi h sa d her s mo n d, an e ame idl se ur d to each end of the bar and extended forwardly, a ground wheel on the forward end of each end frame, disc units pivoted to, and extending rearwardly from, said bar and aplurality of gangs of discs mounted on each unit.

2. In a harrow, a frame whose forward, end is adapted to be connected to a tractor, a transe verse bar supported on said frame, an end frame rigidly secured to each end of the bar and extended forwardly, a ground wheel on the fOI'-, ward end of each end frame, disc units pivoted to and extending rearwardly from said bar, a gang of rotatable discs on each unit, flexible members connected, at their rear ends, to said disc units and means connecting the forward and of said flexible members to the bar whereby the disc units will be lifted when the bar is elevated.

3. In a harrow, a disc unit frame, an anchor. plate. e r to th fram an. anchor secured;

underneath said plate and adjustable about an approximately verticalz axis a t l-shaped frame on said anchor and adjustable about an approximately horizontal axis, a gang of discs rotatably mounted on said last mentioned frame, means for connecting said unit to a tractor, said unit being connected to said connecting means to pivot about an approximately horizontal axis.

4, In a harrow, a transverse bar, means connected to the bar and extended forwardly and adapted to connect said bar to a tractor to move on a transverse axis, disc units pivoted to, and extended rearwardly from, said ban, a gang. of discs mounted on each unit and adjustable there? on on vertical and horizontalv axis, av frame secured to each end ofsa drbar anaex ward y nd a ound Wheel r a y m d Qnih forward nd-ofv eachi rame.

5. In a ar o a t ansverse bar, a frame whose forward end is connected to the bar to pivoton a transverse axis, an anchqr secured to, the rear end of each frame, said anchor including a. top plate and a depending vertical plate secured to the top plate, an anchor plate secured to the rear end of each frame and having an arcuate lot, said top plate being fitted against the under: side of said anchor plate, a clamp secured to, said p plate and Wo king t rou h sa d s t d having clamp means on the upper end thereof tov clarnp said anchor a selected position, an inverted U-shaped yoke secured to said vertical plate and adjustable thereon, an; axle mounted to rotate in bearings in the free ends of said yoke n a. gang of d n said. ax

6. In a harrow, a transverse bar, a frame whose forward end is pivoted to Inove'on a transverse axis and is supported by said bar and; extends rearwardly therefrom, said frame includingrearwardly diverging side bars, an H-frame connecte i s. rear e ds s i r and-- a l ra y of, gangs of rotatable cutting discs dependingfrqrn the rear end; of said frame,

7. In a, harrow, a frameWllOSe forward end is, adapted to be connected to atractor, a transverse bar supported on said frame, plates clamped to said bar in spaced relation, forward extensions on each of said plates beneath the bar and spaced apart, a plurality of disc units, each unit including side members which diverge rearwardly, the forward ends, of said side members extending underneath said bar and being pivoted to the for.- wa nd of h -q r sp nd s x nsion so as, to pivot on horizontal axes anddiscs carried y me er nds o h respec i s- MUEL. J- M LLER- REFERENCES, CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS